("Cannot set up the currently selected force field for this molecule. Switching to UFF"

Hello friends!

I would like some help. When selecting the MMFF94 force field and then selecting the “Conformer Search” option, the following message appears.

can anybody help me? I’m working with a molecule that contains boron, its structure is below.

The MMFF94 force field does not have parameters for boron. So the message is letting you know that – and that Avogadro will use UFF instead, which has parameters for most elements.